摘要
2011年3月11日日本东北部宫城县以东太平洋海域发生9.0级地震时,我国有不少地下流体台站记录到了丰富的同震响应现象,甘肃地区数字化地下流体观测资料也出现不同程度的同震响应。分析了该地震时甘肃地区数字化水位、水温同震变化特征和响应能力,发现井水位的同震响应有振荡和突变两种形态,多数在震后较快恢复原来状态。水温记录同震响应能力明显低于水位,仅有1个测项记录到同震响应,为短时间波动,且很快恢复。
During the Tohoku M9.0 great earthquake of March 11 th,2011,the digital observation data on underground fluids in the Gansu area showed different degrees of co-seismic response.In this study,we analyzed the co-seismic change characteristics and response ability of the digital water levels and water temperature in the Gansu area during the earthquake.It was found that the co-seismic response of the water level had two main patterns:oscillation and mutation.The water level of most wells returned to the initial state a short time after the earthquake.The recorded water temperature data showed a lower response capacity than the water level data.Only one of the measurement instruments recorded the co-seismic response of the water temperature,but this was just a short-term fluctuation and it easily recovered.
出处
《地震工程学报》
CSCD
北大核心
2017年第A01期97-101,共5页
China Earthquake Engineering Journal
基金
中国地震局地震预测研究所兰州科技创新基地科研业务费专项(2017IESLZ07)
关键词
日本强震
同震响应
甘肃地区
水位、水温
great earthquake in Japan
co-seismic response
Gansu area
water level
water temperature
